There were two separate problems affecting availability of the Akismet API today.
The first was a network configuration problem that caused some servers to be unresponsive. Some users may have noticed problems during a 15 minute window starting around 12.30pm PST.
The second was caused by some spurious code that was inadvertently deployed to our production servers. The majority of API calls resulted in an invalid response for a 30 minute period starting around 11.00pm PST.
We apologize for the inconvenience. We’re investigating both incidents closely and putting new measures in place to prevent similar incidents from happening again.